package com.freebuy.goods.service.impl;

import com.alibaba.fastjson.JSON;
import com.freebuy.goods.dao.*;
import com.freebuy.goods.pojo.*;
import com.freebuy.goods.service.SpuService;
import com.freebuy.util.IdWorker;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import tk.mybatis.mapper.entity.Example;

import java.util.Date;
import java.util.List;
import java.util.Map;

@Service
public class SpuServiceImpl implements SpuService {

    @Autowired //用于将spu存入数据库
    private SpuMapper spuMapper;
    //注入idworker
    @Autowired //获取分布式id
    private IdWorker idWorker;

    @Autowired //注入catagarymapper
    private CategoryMapper categoryMapper;

    @Autowired
    private BrandMapper brandMapper;

    @Autowired //用于将sku存入数据库
    private SkuMapper skuMapper;

    @Autowired
    private CategoryBrandMapper categoryBrandMapper;

    /**
     * 查询全部列表
     * @return
     */
    @Override
    public List<Spu> findAll() {
        return spuMapper.selectAll();
    }

    /**
     * 根据ID查询
     * @param id
     * @return
     */
    @Override
    public Spu findById(String id){
        return  spuMapper.selectByPrimaryKey(id);
    }

    /**
     * 增加
     * @param goodsDto
     */
    @Override
    public void add(GoodsDto goodsDto) {
       //添加spu
        Spu spu = goodsDto.getSpu();
        //获取分布式id并给spu设置
        long id = idWorker.nextId();
        spu.setId(String.valueOf(id));
        //设置删除状态
        spu.setIsDelete("0");
        //设置上架状态
        spu.setIsMarketable("0");
        //设置审核状态
        spu.setStatus("0");
        //添加
        spuMapper.insertSelective(spu);

        //添加skus
        this.saveSkuList(goodsDto);
    }


    //添加skus数据
    private void saveSkuList(GoodsDto goodsDto) {
        Spu spu = goodsDto.getSpu();
        //查询分类对象
        Category category = categoryMapper.selectByPrimaryKey(spu.getCategory3Id());
        //查询品牌对象
        Brand brand = brandMapper.selectByPrimaryKey(spu.getBrandId());
        //设置品牌与分类关系
        // 查询关联表
        CategoryBrand categoryBrand = new CategoryBrand();
        categoryBrand.setBrandId(spu.getBrandId());
        categoryBrand.setCategoryId(spu.getCategory3Id());
        int count = categoryBrandMapper.selectCount(categoryBrand);
        if (count==0){
            //在关联表添加关联信息
            categoryBrandMapper.insert(categoryBrand);
        }

        //获取当前skus
        List<Sku> skuList = goodsDto.getSkuList();
        if (skuList != null && skuList.size() > 0) {
            //遍历集合，填充数据并添加到数据库
            for (Sku sku : skuList) {
                //设置skuid
                sku.setId(String.valueOf(idWorker.nextId()));
                //设置sku规格数据
                if (StringUtils.isEmpty(sku.getSpec())) {
                    sku.setSpec("0");
                }
                //设置sku名称(spu名+规格)
                String name = spu.getName();
                //将规格json转换map
                Map<String, String> specMap = JSON.parseObject(sku.getSpec(), Map.class);
                if (specMap != null && specMap.size() > 0) {
                    for (String value : specMap.values()) {
                        name = "" + value;
                    }
                    sku.setName(name);
                    //设置spuid
                    sku.setSpuId(spu.getId());
                    //设置当前创建与修改时间
                    sku.setCreateTime(new Date());
                    sku.setUpdateTime(new Date());
                    //商品分类id
                    sku.setCategoryId(category.getId());
                    //设置商品分类
                    sku.setCategoryName(category.getName());
                    //设置品牌名称
                    sku.setBrandName(brand.getName());
                    //将当前sku添加到数据库
                    skuMapper.insertSelective(sku);
                }
            }
        }
    }

        /**
         * 修改
         * @param goodsDto
         */
        @Override
        @Transactional
        public void update (GoodsDto goodsDto){
            Spu spu = goodsDto.getSpu();
            //修改spu
          spuMapper.updateByPrimaryKey(spu);
            //修改sku：先删除原有skus
            Example example = new Example(Sku.class);
            Example.Criteria criteria = example.createCriteria();
            criteria.andEqualTo("spuId",spu.getId());
            skuMapper.deleteByExample(example);
            //现有的新的sku列表重新添加skus
            this.saveSkuList(goodsDto);
        }

        /**
         * 删除
         * @param id
         */
        @Override
        public void delete (String id){
            //逻辑删除
            //查寻spu
            Spu spu = spuMapper.selectByPrimaryKey(id);
            //判断是否下架
            if (!"0".equals(spu.getIsMarketable())){
                throw new RuntimeException("当前商品必须处于下架状态才能删除");
            }
            spu.setIsDelete("1");
            spu.setStatus("0");
            spuMapper.updateByPrimaryKeySelective(spu);
        }


        /**
         * 条件查询
         * @param searchMap
         * @return
         */
        @Override
        public List<Spu> findList (Map < String, Object > searchMap){
            Example example = createExample(searchMap);
            return spuMapper.selectByExample(example);
        }

        /**
         * 分页查询
         * @param page
         * @param size
         * @return
         */
        @Override
        public Page<Spu> findPage ( int page, int size){
            PageHelper.startPage(page, size);
            return (Page<Spu>) spuMapper.selectAll();
        }

        /**
         * 条件+分页查询
         * @param searchMap 查询条件
         * @param page 页码
         * @param size 页大小
         * @return 分页结果
         */
        @Override
        public Page<Spu> findPage (Map < String, Object > searchMap,int page, int size){
            PageHelper.startPage(page, size);
            Example example = createExample(searchMap);
            return (Page<Spu>) spuMapper.selectByExample(example);
        }

    @Override
    public GoodsDto findGoodsById(String id) {
        GoodsDto goods= new GoodsDto();
        //查询spu
        Spu spu = spuMapper.selectByPrimaryKey(id);
        goods.setSpu(spu);
        //查询sku
        Example example = new Example(Sku.class);
        Example.Criteria criteria = example.createCriteria();
        //根据spu查询sku列表
        criteria.andEqualTo("spuId",id);
        List<Sku> skuList = skuMapper.selectByExample(example);
        goods.setSkuList(skuList);
        return goods;
    }

    /** 构建查询对象
         * @param searchMap
         * @return
         */
        private Example createExample (Map < String, Object > searchMap){
            Example example = new Example(Spu.class);
            Example.Criteria criteria = example.createCriteria();
            if (searchMap != null) {
                // 主键
                if (searchMap.get("id") != null && !"".equals(searchMap.get("id"))) {
                    criteria.andEqualTo("id", searchMap.get("id"));
                }
                // 货号
                if (searchMap.get("sn") != null && !"".equals(searchMap.get("sn"))) {
                    criteria.andEqualTo("sn", searchMap.get("sn"));
                }
                // SPU名
                if (searchMap.get("name") != null && !"".equals(searchMap.get("name"))) {
                    criteria.andLike("name", "%" + searchMap.get("name") + "%");
                }
                // 副标题
                if (searchMap.get("caption") != null && !"".equals(searchMap.get("caption"))) {
                    criteria.andLike("caption", "%" + searchMap.get("caption") + "%");
                }
                // 图片
                if (searchMap.get("image") != null && !"".equals(searchMap.get("image"))) {
                    criteria.andLike("image", "%" + searchMap.get("image") + "%");
                }
                // 图片列表
                if (searchMap.get("images") != null && !"".equals(searchMap.get("images"))) {
                    criteria.andLike("images", "%" + searchMap.get("images") + "%");
                }
                // 售后服务
                if (searchMap.get("saleService") != null && !"".equals(searchMap.get("saleService"))) {
                    criteria.andLike("saleService", "%" + searchMap.get("saleService") + "%");
                }
                // 介绍
                if (searchMap.get("introduction") != null && !"".equals(searchMap.get("introduction"))) {
                    criteria.andLike("introduction", "%" + searchMap.get("introduction") + "%");
                }
                // 规格列表
                if (searchMap.get("specItems") != null && !"".equals(searchMap.get("specItems"))) {
                    criteria.andLike("specItems", "%" + searchMap.get("specItems") + "%");
                }
                // 参数列表
                if (searchMap.get("paraItems") != null && !"".equals(searchMap.get("paraItems"))) {
                    criteria.andLike("paraItems", "%" + searchMap.get("paraItems") + "%");
                }
                // 是否上架
                if (searchMap.get("isMarketable") != null && !"".equals(searchMap.get("isMarketable"))) {
                    criteria.andEqualTo("isMarketable", searchMap.get("isMarketable"));
                }
                // 是否启用规格
                if (searchMap.get("isEnableSpec") != null && !"".equals(searchMap.get("isEnableSpec"))) {
                    criteria.andEqualTo("isEnableSpec", searchMap.get("isEnableSpec"));
                }
                // 是否删除
                if (searchMap.get("isDelete") != null && !"".equals(searchMap.get("isDelete"))) {
                    criteria.andEqualTo("isDelete", searchMap.get("isDelete"));
                }
                // 审核状态
                if (searchMap.get("status") != null && !"".equals(searchMap.get("status"))) {
                    criteria.andEqualTo("status", searchMap.get("status"));
                }

                // 品牌ID
                if (searchMap.get("brandId") != null) {
                    criteria.andEqualTo("brandId", searchMap.get("brandId"));
                }
                // 一级分类
                if (searchMap.get("category1Id") != null) {
                    criteria.andEqualTo("category1Id", searchMap.get("category1Id"));
                }
                // 二级分类
                if (searchMap.get("category2Id") != null) {
                    criteria.andEqualTo("category2Id", searchMap.get("category2Id"));
                }
                // 三级分类
                if (searchMap.get("category3Id") != null) {
                    criteria.andEqualTo("category3Id", searchMap.get("category3Id"));
                }
                // 模板ID
                if (searchMap.get("templateId") != null) {
                    criteria.andEqualTo("templateId", searchMap.get("templateId"));
                }
                // 运费模板id
                if (searchMap.get("freightId") != null) {
                    criteria.andEqualTo("freightId", searchMap.get("freightId"));
                }
                // 销量
                if (searchMap.get("saleNum") != null) {
                    criteria.andEqualTo("saleNum", searchMap.get("saleNum"));
                }
                // 评论数
                if (searchMap.get("commentNum") != null) {
                    criteria.andEqualTo("commentNum", searchMap.get("commentNum"));
                }

            }
            return example;
        }
//商品审核
    @Override
    @Transactional
    public void audit(String id) {
            //查询spu
        Spu spu = spuMapper.selectByPrimaryKey(id);
        if (spu==null){
            throw  new RuntimeException("当前商品不存在");
        }
        //查询商品是否逻辑删除
        String isDelete = spu.getIsDelete();
        if ("1".equals(isDelete)){
            throw  new RuntimeException("当前商品不存在");
        }
        //修改审核状态并上架
        spu.setStatus("1");
        spu.setIsMarketable("1");
         spuMapper.updateByPrimaryKeySelective(spu);
}
//商品下架
    @Override
    @Transactional
    public void pull(String id) {
        //查询spu
        Spu spu = spuMapper.selectByPrimaryKey(id);
        if (spu==null){
            throw  new RuntimeException("当前商品不存在");
        }
        //查询是否删除状态
        //查询商品是否逻辑删除
        String isDelete = spu.getIsDelete();
        if ("1".equals(isDelete)){
            throw  new RuntimeException("当前商品不存在");
        }
        //未删除修改上下架状态
        spu.setIsMarketable("0");
        spuMapper.updateByPrimaryKeySelective(spu);
    }
//商品上架
    @Override
    @Transactional
    public void put(String id) {
        //查询spu
        Spu spu = spuMapper.selectByPrimaryKey(id);
        if (spu==null){
            throw  new RuntimeException("当前商品不存在");
        }
        //查询是否删除状态
        //查询商品是否逻辑删除
        String isDelete = spu.getIsDelete();
        if ("1".equals(isDelete)){
            throw  new RuntimeException("当前商品不存在");
        }
        //是否已审核
        if(!"1".equals(spu.getStatus())){
            throw new RuntimeException("当前商品未审核");
        }
        //修改上下架状态
        spu.setIsMarketable("1");
        spuMapper.updateByPrimaryKeySelective(spu);
    }
//还原商品
    @Override
    @Transactional
    public void restore(String id) {
        //查询商品
        Spu spu = spuMapper.selectByPrimaryKey(id);
        if (spu==null){
            throw  new RuntimeException("当前商品不存在");
        }
        //查询是否删除状态
        //查询商品是否逻辑删除
        String isDelete = spu.getIsDelete();
        if (!"1".equals(isDelete)){
            throw  new RuntimeException("当前商品未删除");
        }
        //还原操作
        spu.setIsDelete("0");
        spu.setIsMarketable("0");
        spu.setStatus("0");

        spuMapper.updateByPrimaryKeySelective(spu);
    }
    //还原商品
    @Override
    @Transactional
    public void realdelete(String id) {
        //查询商品
        Spu spu = spuMapper.selectByPrimaryKey(id);
        if (spu==null){
            throw  new RuntimeException("当前商品不存在");
        }
        //查询商品是否逻辑删除
        String isDelete = spu.getIsDelete();
        if (!"1".equals(isDelete)){
            throw  new RuntimeException("当前商品未删除");
        }
        //真正删除操作
        spuMapper.deleteByPrimaryKey(id);
    }

}
